Bolus button



FIG. 1 is a perspective view showing the front, right side, and bottom of a bolus button in accordance with our new design;

FIG. 2 is a right side elevation view of the bolus button of FIG. 1;

FIG. 3 is a left side elevation view of the bolus button of FIG. 1;

FIG. 4 is a front plan view of the bolus button of FIG. 1;

FIG. 5 is a back plan view of the bolus button of FIG. 1;

FIG. 6 is a top elevation view of the bolus button of FIG. 1; and,

FIG. 7 is a bottom elevation view of the bolus button of FIG. 1.

The broken lines show portions of the bolus button that form no part of the claimed design. 

CLAIM The ornamental design for a bolus button, as shown and described. 